Detail publikace

Fractional-Order Phase Shifters with Constant Magnitude Frequency Responses

Originální název

Fractional-Order Phase Shifters with Constant Magnitude Frequency Responses

Anglický název

Fractional-Order Phase Shifters with Constant Magnitude Frequency Responses

Jazyk

en

Originální abstrakt

This contribution presents and experimentally analyzes the idea how to reach the constant magnitude as well as the phase response in the fractional-order (FO) phase when shifting two-ports. The straightforward method employing the automatic gain control circuit (AGC) in a cascade after so-called constant phase block approximating FO integrator or differentiator is studied. The variable gain amplifier utilized in AGC and simple RC-based FO constant phase elements (approximating capacitors with order alpha = 1/4 and alpha = 1/2 as an example) connected in the feedback of operational amplifier-based integrator are established in the experimental setup. The operation indicated in three decades (between 100 Hz and 100 kHz) is evaluated. The known solutions of the standard FO phase shifting circuits are discussed and generally compared with the features obtained in this paper, together with the supposed effects of AGC on their performances.

Anglický abstrakt

This contribution presents and experimentally analyzes the idea how to reach the constant magnitude as well as the phase response in the fractional-order (FO) phase when shifting two-ports. The straightforward method employing the automatic gain control circuit (AGC) in a cascade after so-called constant phase block approximating FO integrator or differentiator is studied. The variable gain amplifier utilized in AGC and simple RC-based FO constant phase elements (approximating capacitors with order alpha = 1/4 and alpha = 1/2 as an example) connected in the feedback of operational amplifier-based integrator are established in the experimental setup. The operation indicated in three decades (between 100 Hz and 100 kHz) is evaluated. The known solutions of the standard FO phase shifting circuits are discussed and generally compared with the features obtained in this paper, together with the supposed effects of AGC on their performances.

Plný text v Digitální knihovně

BibTex


@article{BUT159077,
  author="Roman {Šotner} and Lukáš {Langhammer} and Jan {Jeřábek} and Peter A. {Ushakov} and Tomáš {Dostál}",
  title="Fractional-Order Phase Shifters with Constant Magnitude Frequency Responses",
  annote="This contribution presents and experimentally analyzes the idea how to reach the constant magnitude as well as the phase response in the fractional-order (FO) phase when shifting two-ports. The straightforward method employing the automatic gain control circuit (AGC) in a cascade after so-called constant phase block approximating FO integrator or differentiator is studied. The variable gain amplifier utilized in AGC and simple RC-based FO constant phase elements (approximating capacitors with order alpha = 1/4 and alpha = 1/2 as an example) connected in the feedback of operational amplifier-based integrator are established in the experimental setup. The operation indicated in three decades (between 100 Hz and 100 kHz) is evaluated. The known solutions of the standard FO phase shifting circuits are discussed and generally compared with the features obtained in this paper, together with the supposed effects of AGC on their performances.",
  address="Kaunas University of Technology",
  chapter="159077",
  doi="10.5755/j01.eie.25.5.24352",
  howpublished="print",
  institution="Kaunas University of Technology",
  number="5",
  volume="25",
  year="2019",
  month="october",
  pages="25--30",
  publisher="Kaunas University of Technology",
  type="journal article in Web of Science"
}